EP 0385304 A1 19900905 - Polyamide-imide polymers having fluorine-containing linking groups.
Title (en)
Polyamide-imide polymers having fluorine-containing linking groups.
Title (de)
Polyamid-imid-Polymere mit Fluor enthaltenden Kettengliedern.
Title (fr)
Polymères polyamide-imide ayant des groupements fluorés dans la chaîne.
Publication
Application
Priority
US 31622089 A 19890227
Abstract (en)
The present invention provides novel heat stable polyamide-imide polymers having excellent flow properties which render them more readily processible into fibers, films, sheets and other molded articles. The polymers are prepared by forming the polycondensation product of one or more aromatic diamines, one or more trifunctional acid anhydride monomers, and one or more tetrafunctional aromatic dianhydrides, at least one of said monomers containing the groups CF3 - @ - R linking two aromatic moieties, wherein R is CF3 or phenyl. In addition to improved flow properties, the polyamide-imide polymers of this invention also exhibit improved solubility properties in most organic solvents, improved resistance to attack by chlorinated solvents such as trichloroethylene as compared with polyimides, improved hydrophobic properties as well as excellent thermal properties including resistance to thermooxidative degredation.
IPC 1-7
IPC 8 full level
C08G 73/14 (2006.01)
CPC (source: EP US)
C08G 73/14 (2013.01 - EP US)
Citation (search report)
- [A] GB 2067581 A 19810730 - GEN ELECTRIC
- [AD] US 4448925 A 19840515 - HANSON ROBERT B [US]
- [A] US 4742152 A 19880503 - SCOLA DANIEL A [US]
- [A] US 3959350 A 19760525 - ROGERS FRANCIS ELLIOT
Designated contracting state (EPC)
BE DE FR GB IT NL
DOCDB simple family (publication)
US 4923960 A 19900508; CA 2009078 A1 19900827; EP 0385304 A1 19900905; JP H02269742 A 19901105
DOCDB simple family (application)
US 31622089 A 19890227; CA 2009078 A 19900201; EP 90103561 A 19900223; JP 4708290 A 19900227